In his farewell speech, President Dwight Eisenhower famously warned us of the dangers of a military-industrial complex (MIC). In Paul Koistinen’s sobering new book, that warning appears to have been both prophetic and largely ignored.As the final volume in his magisterial study of the political economy of American warfare, State of War describes the bipolar world that developed from the rivalry between the U.S. and USSR, showing how seventy years of defense spending have bred a monster that has sunk its claws into the very fabric of American life. Koistinen underscores how during the second half of the twentieth century and well into the twenty-first, the United States for the first time in its history began to maintain large military structures during peacetime. Many factors led to that result: the American economy stood practically alone in a war-ravaged world; the federal government, especially executive authority, was at the pinnacle of its powers; the military accumulated...